77976806 has 8 divisors (see below), whose sum is σ = 117075504. Its totient is φ = 38951640.

The previous prime is 77976803. The next prime is 77976823. The reversal of 77976806 is 60867977.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (77976803) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 15650 + ... + 20021.

It is an arithmetic number, because the mean of its divisors is an integer number (14634438).

Almost surely, 2^77976806 is an apocalyptic number.

77976806 is a deficient number, since it is larger than the sum of its proper divisors (39098698).

77976806 is a wasteful number, since it uses less digits than its factorization.

77976806 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 36766.

The product of its (nonzero) digits is 889056, while the sum is 50.

The square root of 77976806 is about 8830.4476670212. The cubic root of 77976806 is about 427.2235135246.

The spelling of 77976806 in words is "seventy-seven million, nine hundred seventy-six thousand, eight hundred six".